BIO 669 FINAL TEST 2026 QUESTIONS
WITH CORRECT ANSWERS GRADED A+
◍ As a wave of action potentials travel from the atria into the ventricles, it is
momentarily delayed by about 0.1 seconds as a result of slow conduction
through the:
A. SA node
B. AV Node
C. Atrioventricular bundle (of his)
D. Left and right bundle branches
E. Purkinje fibers.
Answer: B. AV Node
◍ A thrombus is a blood clot that remains attached to a vessel wall. Which of
the following is NOT one of the main factors as proposed by Virchow?
A. Obesity
B. Venous Stasis
C. Venous Endothelial damage
D. Hypercoagulable states.
Answer: A. Obesity
◍ Which of the following stimulates the release of oxytocin?a. Dehydrationb.
Rising blood calcium levelsc. Rise in estrogen levelsd. Stimulation of the
nipples.
Answer: d. Stimulation of the nipples
◍ The most common cause of aneurysm is:
A. External Hematoma
B. Atherosclerosis with hypertension
C. Genetics
D. Congestive heart failure.
, Answer: B. Atherosclerosis with hypertension
◍ Which of the following is a correct statement regarding baroreceptor reflex
activity on the heart?a. A drop in blood pressure would result in release of
natriuretic peptidesb. A drop in blood pressure would result in reflex to
decrease heart rate, contractility, and peripheral resistancec. A rise in blood
pressure would result in reflex to increase heart rate, contractility , and
peripheral resistanced. A drop in blood pressure would result in reflex to
increase heart rate, contractility, and peripheral resistance.
Answer: d. A drop in blood pressure would result in reflex to increase heart
rate, contractility, and peripheral resistance
◍ If anterior pituitary secretion is deficient in a growing child, the child will:a.
Mature sexually at an earlier than normal age.b. Become a dwarf, but have
fairly normal body proportionsc. Develop acromegalyd. Be in constant
danger of dehydration.
Answer: b. Become a dwarf, but have fairly normal body proportions
◍ A possible symptom of an expanding pituitary tumor not related to
hormones includes:a. Visual disturbancesb. Muscle weaknessc. Respiratory
depressiond. Hearing disturbances.
Answer: a. Visual disturbances
◍ Insulin has effects on electrolytes as well, such as stimulating the movement
of:a. K+, PO4, Mg++ and amino acids into the cellb. Na+ out of the cellc.
Ca++ into the celld. Cl- out of the cell.
Answer: a. K+, PO4, Mg++ and amino acids into the cell
◍ The ____ is an opening for venous drainage to empty into the right atrium:
A. Aortic ostia
B. Circumflex vein
C. Great cardiac vein
D. Coronary sinus.
Answer: D. Coronary sinus
◍ Which of the following is most likely to increase ejection fraction?
, A. Sympathetic nervous system activation
B. Parasympathetic nervous system activation
C. An acute MI affecting the left ventricle
D. Increased afterload.
Answer: A. Sympathetic nervous system activation
◍ Diabetes insipidus will show all of the following sign and symptoms
EXCEPT:a. Glucose in urineb. Frequent urinationc. All of the above are
found in diabetes insipidusd. Stimulation of thirst reflex.
Answer: a. Glucose in urine
◍ An atherosclerotic area that has ruptured is termed a:
A. Fibrous plaque
B. Complicated plaque
C. Fatty streak
D. Aneurysm.
Answer: B. Complicated plaque
◍ The pineal gland is responsible for secretion of:a. Insulinb. Melatoninc.
ACTHd. Prolactin.
Answer: b. Melatonin
◍ A hormone not involved in sugar metabolism is:a. Insulinb. Glucagonc.
Aldosteroned. Cortisol.
Answer: c. Aldosterone
◍ A clinical feature of addison disease is:a. Truncal (abdominal) obesityb.
Muscle wasting and thin extremitiesc. Cardiac hypertrophy and
hypertensiond. Hyperpigmentation.
Answer: d. Hyperpigmentation
◍ Diabetic ketoacidosis occurs most directly as a result of _____ leading to
increased lipolysis and formation of ketone bodies.a. Increased stress
hormonesb. Profound insulin insufficiencyc. Insulin resistance with a mild
decrease in insulind. Hyperglycemia.
Answer: b. Profound insulin insufficiency
WITH CORRECT ANSWERS GRADED A+
◍ As a wave of action potentials travel from the atria into the ventricles, it is
momentarily delayed by about 0.1 seconds as a result of slow conduction
through the:
A. SA node
B. AV Node
C. Atrioventricular bundle (of his)
D. Left and right bundle branches
E. Purkinje fibers.
Answer: B. AV Node
◍ A thrombus is a blood clot that remains attached to a vessel wall. Which of
the following is NOT one of the main factors as proposed by Virchow?
A. Obesity
B. Venous Stasis
C. Venous Endothelial damage
D. Hypercoagulable states.
Answer: A. Obesity
◍ Which of the following stimulates the release of oxytocin?a. Dehydrationb.
Rising blood calcium levelsc. Rise in estrogen levelsd. Stimulation of the
nipples.
Answer: d. Stimulation of the nipples
◍ The most common cause of aneurysm is:
A. External Hematoma
B. Atherosclerosis with hypertension
C. Genetics
D. Congestive heart failure.
, Answer: B. Atherosclerosis with hypertension
◍ Which of the following is a correct statement regarding baroreceptor reflex
activity on the heart?a. A drop in blood pressure would result in release of
natriuretic peptidesb. A drop in blood pressure would result in reflex to
decrease heart rate, contractility, and peripheral resistancec. A rise in blood
pressure would result in reflex to increase heart rate, contractility , and
peripheral resistanced. A drop in blood pressure would result in reflex to
increase heart rate, contractility, and peripheral resistance.
Answer: d. A drop in blood pressure would result in reflex to increase heart
rate, contractility, and peripheral resistance
◍ If anterior pituitary secretion is deficient in a growing child, the child will:a.
Mature sexually at an earlier than normal age.b. Become a dwarf, but have
fairly normal body proportionsc. Develop acromegalyd. Be in constant
danger of dehydration.
Answer: b. Become a dwarf, but have fairly normal body proportions
◍ A possible symptom of an expanding pituitary tumor not related to
hormones includes:a. Visual disturbancesb. Muscle weaknessc. Respiratory
depressiond. Hearing disturbances.
Answer: a. Visual disturbances
◍ Insulin has effects on electrolytes as well, such as stimulating the movement
of:a. K+, PO4, Mg++ and amino acids into the cellb. Na+ out of the cellc.
Ca++ into the celld. Cl- out of the cell.
Answer: a. K+, PO4, Mg++ and amino acids into the cell
◍ The ____ is an opening for venous drainage to empty into the right atrium:
A. Aortic ostia
B. Circumflex vein
C. Great cardiac vein
D. Coronary sinus.
Answer: D. Coronary sinus
◍ Which of the following is most likely to increase ejection fraction?
, A. Sympathetic nervous system activation
B. Parasympathetic nervous system activation
C. An acute MI affecting the left ventricle
D. Increased afterload.
Answer: A. Sympathetic nervous system activation
◍ Diabetes insipidus will show all of the following sign and symptoms
EXCEPT:a. Glucose in urineb. Frequent urinationc. All of the above are
found in diabetes insipidusd. Stimulation of thirst reflex.
Answer: a. Glucose in urine
◍ An atherosclerotic area that has ruptured is termed a:
A. Fibrous plaque
B. Complicated plaque
C. Fatty streak
D. Aneurysm.
Answer: B. Complicated plaque
◍ The pineal gland is responsible for secretion of:a. Insulinb. Melatoninc.
ACTHd. Prolactin.
Answer: b. Melatonin
◍ A hormone not involved in sugar metabolism is:a. Insulinb. Glucagonc.
Aldosteroned. Cortisol.
Answer: c. Aldosterone
◍ A clinical feature of addison disease is:a. Truncal (abdominal) obesityb.
Muscle wasting and thin extremitiesc. Cardiac hypertrophy and
hypertensiond. Hyperpigmentation.
Answer: d. Hyperpigmentation
◍ Diabetic ketoacidosis occurs most directly as a result of _____ leading to
increased lipolysis and formation of ketone bodies.a. Increased stress
hormonesb. Profound insulin insufficiencyc. Insulin resistance with a mild
decrease in insulind. Hyperglycemia.
Answer: b. Profound insulin insufficiency
